Electronic device and antenna module

Abstract

An electronic device and an antenna module are provided. The electronic device includes a metal housing and the antenna module disposed. The metal housing has a slot, and the slot has an open end. The antenna module includes a carrier, a feeding element, a radiating element connected to the feeding element, and a grounding element. The radiating element is disposed on a first surface of the carrier. An orthogonal projection of the radiating element that is projected onto the metal housing at least partially overlaps with the slot. The grounding element includes a first grounding portion and a second grounding portion electrically connected to each other. The radiating element and the first grounding portion are spaced apart from each other by a first coupling gap, and the radiating element and the second grounding portion are spaced apart from each other by a second coupling gap.

What is claimed is: 
     
       1. An electronic device, comprising:
 a metal housing having a slot, wherein the slot has an open end; 
 a carrier disposed in the metal housing, wherein the carrier has a first surface and a second surface that are opposite to each other, and has a third surface and a fourth surface that are opposite to each other; wherein the first surface faces the slot, and the third surface and the fourth surface are located between the first surface and the second surface; 
 a feeding element disposed in the metal housing and being used to feed a signal; 
 a radiating element disposed on the first surface, wherein an orthogonal projection of the radiating element that is projected onto the metal housing at least partially overlaps with the slot, and the radiating element is connected to the feeding element; and 
 a grounding element including a first grounding portion and a second grounding portion, wherein the first grounding portion is disposed on the third surface, the second grounding portion is disposed on the fourth surface, the first grounding portion and the second grounding portion are electrically connected to each other, the radiating element and the first grounding portion are spaced apart from each other by a first coupling gap, and the radiating element and the second grounding portion are spaced apart from each other by a second coupling gap. 
 
     
     
       2. The electronic device according to  claim 1 , wherein the slot further has a first closed end and a second closed end, and the open end is located between the first closed end and the second closed end, such that the slot is formed to have a T shape. 
     
     
       3. The electronic device according to  claim 2 , wherein the radiating element is coupled to a part of the slot between the open end and the first closed end to generate a first operating frequency band and a second operating frequency band, and the radiating element is coupled to a part of the slot between the open end and the second closed end to generate a third operating frequency band; wherein the second operating frequency band is higher than the first operating frequency band, and the third operating frequency band is higher than the first operating frequency band. 
     
     
       4. The electronic device according to  claim 3 , wherein the radiating element is coupled to the first grounding portion to generate a fourth operating frequency band and a fifth operating frequency band, and the fifth operating frequency band is higher than the fourth operating frequency band; wherein the radiating element is coupled to the second grounding portion to generate a sixth operating frequency band and a seventh operating frequency band, and the seventh operating frequency band is higher than the sixth operating frequency band. 
     
     
       5. The electronic device according to  claim 1 , further comprising a first metal wall and a second metal wall, wherein the first metal wall and the second metal wall are disposed on the metal housing or the carrier, and the radiating element and the grounding element are located between the first metal wall and the second metal wall; wherein the metal housing includes a first housing and a second housing, and the first housing and the second housing are electrically connected to each other and are both grounded. 
     
     
       6. The electronic device according to  claim 5 , further comprising a third metal wall, wherein the third metal wall is disposed at a side that is adjacent to the second surface of the carrier, and the first metal wall, the second metal wall and the third metal wall jointly surround the radiating element and the grounding element. 
     
     
       7. The electronic device according to  claim 5 , wherein the grounding element further includes a third grounding portion disposed on the second surface of the carrier, and the third grounding portion is connected between the first grounding portion and the second grounding portion. 
     
     
       8. The electronic device according to  claim 1 , wherein the first coupling gap and the second coupling gap are each within a range from 0.05 mm to 10 mm. 
     
     
       9. The electronic device according to  claim 1 , further comprising an inductor, a capacitor, a signal transmission line and a proximity sensing circuit, wherein the capacitor is connected between the radiating element and the feeding element, the inductor is connected between the radiating element and the signal transmission line, one end of the signal transmission line is connected to the inductor, and another end of the signal transmission line is connected to the proximity sensing circuit. 
     
     
       10. An antenna module disposed in a metal housing having a slot, the slot having an open end, a first closed end and a second closed end, and the open end being located between the first closed end and the second closed end, the antenna module comprising:
 a carrier disposed in the metal housing, wherein the carrier has a first surface and a second surface that are opposite to each other, and has a third surface and a fourth surface that are opposite to each other; wherein the first surface faces the slot, and the third surface and the fourth surface are located between the first surface and the second surface; 
 a radiating element disposed on the first surface, wherein an orthogonal projection of the radiating element that is projected onto the metal housing at least partially overlaps with the slot; wherein the radiating element is connected to a feeding element, and a signal is fed into the radiating element through the feeding element; and 
 a grounding element including a first grounding portion and a second grounding portion, wherein the first grounding portion is disposed on the third surface, the second grounding portion is disposed on the fourth surface, the first grounding portion and the second grounding portion are electrically connected to each other, the radiating element and the first grounding portion are spaced apart from each other by a first coupling gap, and the radiating element and the second grounding portion are spaced apart from each other by a second coupling gap. 
 
     
     
       11. The antenna module according to  claim 10 , wherein the radiating element is coupled to a part of the slot between the open end and the first closed end to generate a first operating frequency band and a second operating frequency band, and the radiating element is coupled to a part of the slot between the open end and the second closed end to generate a third operating frequency band; wherein the second operating frequency band is higher than the first operating frequency band, and the third operating frequency band is higher than the first operating frequency band. 
     
     
       12. The antenna module according to  claim 11 , wherein the radiating element is coupled to the first grounding portion to generate a fourth operating frequency band and a fifth operating frequency band, and the fifth operating frequency band is higher than the fourth operating frequency band; wherein the radiating element is coupled to the second grounding portion to generate a sixth operating frequency band and a seventh operating frequency band, and the seventh operating frequency band is higher than the sixth operating frequency band. 
     
     
       13. The antenna module according to  claim 10 , further comprising a first metal wall and a second metal wall, wherein the first metal wall and the second metal wall are disposed on the carrier, and the radiating element and the grounding element are located between the first metal wall and the second metal wall; wherein the metal housing includes a first housing and a second housing, and the first housing and the second housing are electrically connected to each other and are both grounded. 
     
     
       14. The antenna module according to  claim 13 , further comprising a third metal wall, wherein the third metal wall is disposed at a side that is adjacent to the second surface of the carrier, and the first metal wall, the second metal wall and the third metal wall jointly surround the radiating element and the grounding element. 
     
     
       15. The antenna module according to  claim 13 , wherein the grounding element further includes a third grounding portion disposed on the second surface of the carrier, and the third grounding portion is connected between the first grounding portion and the second grounding portion. 
     
     
       16. The antenna module according to  claim 10 , wherein the first coupling gap and the second coupling gap are each within a range from 0.05 mm to 10 mm. 
     
     
       17. The antenna module according to  claim 10 , further comprising an inductor, a capacitor and a signal transmission line, wherein the capacitor is connected between the radiating element and the feeding element, the inductor is connected between the radiating element and the signal transmission line, one end of the signal transmission line is connected to the inductor, and another end of the signal transmission line is connected to a proximity sensing circuit.